结冰期辽东湾北部海冰和海水中典型污染物分析与评价

Analysis and evaluation of typical pollutants in sea-ice and sea water in northern Liaodong Bay during icing period

本文根据2020年辽东湾斑海豹繁殖地海冰和海水的调查数据,分析了该海域水质状况,探讨了其污染物来源,并将两种介质的污染物浓度进行了对比分析。结果表明,海冰融化水中石油类浓度明显高于同站位表层海水,重金属浓度则略高于同站位海水,Pb和Zn是影响海冰重金属污染指数的主要负面因子;石油类和重金属具有较高的相关性,重金属各因子之间也具有很好的相关性,表明它们具有相似的来源及迁移规律,污染物可能主要来源于北部河口区和近岸港口区;海冰融化水中污染物浓度在北部河口和中部海域出现多个不规则的高值区,且与同站位海水无明显相关性。

The aqueous quality of the melted sea-ice water and surface seawater at 11 same stations in the phoca largha breeding area was investigated in 2020.According to the research data,this project analyzed the quality of the melted sea-ice water,discussed the source of involved pollutants and compared with them in the seawater at the same station.The results turn out that the contaminant concentration of the melted sea-ice water is significantly higher than that of the surface seawater at the same station.Besides,Pb and Zn are proved to be the dominant negative factors that affect the heavy metal pollution index of the sea-ice.The sound correlation reflected between heavy metals as well as petroleum and heavy metal in the water indicated the similar sources and transferring regularity of the involving pollutants and the main source of pollutants should be in the northern estuary and coastal ports.There are many irregular high value areas of pollutant concentration in the northern estuary and the central sea area and no apparent correlation between sea-ice water and seawater at the same station.